Is it safe to use with Claritin?

This is the third year of whatever this is. Starts with a mild sore throat, then a tickle and cough, then a constant cough from he baback of my throat that eventually goes down to my chest. No runny, itchy nose. No sneezing. One dr. said bronchitis, one said asthema, another said allergies. I just want to stop the cough.I

Added 18 Sep 2010:

Sorry. I thought I was on a site for Patanase info. My question: Is Patanase nasal spray okay to use with Claritin tablets? And if I should take Phenergan cough syrup also, would there be a conflict between meds or possible overmedicating?